EMC2104 datasheet(52/101 Pages) SMSC

52 / 101 page

Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown

Datasheet

Revision 1.74 (05-08-08)

SMSC EMC2104

DATASHEET

6.4

Pushed Temperature Registers

The Pushed Temperature Registers store user programmed temperature values that can be used by

the look-up table to update the fan control algorithm. Data written in these registers is not compared

against any limits and must match the data format shown in Table 6.3.

6.5

Voltage Registers

The Voltage Registers hold the data read from the TRIP_SET voltage input. The TRIP_SET voltage is

stored whether the TRIP_SET is used to set the Thermal / Critical Shutdown temperature or configured

to act as the VIN4 input.

Each bit weight represents mV of resolution so that the final voltage can be determined by adding the

appropriately set bits together.

0100_0001b

41h

127

0111_1111b

7Fh

130

1000_0010b

82h

150

1001_0110b

96h

Table 6.6 Pushed Temperature Register

ADDR

R/W

DEFAULT

0Ch

R/W

Pushed

Temperature 1

Sign

00h

0Dh

R/W

Pushed

Temperature 2

Sign

00h

0Eh

R/W

Pushed

Temperature 3

Sign

00h

0Fh

R/W

Pushed

Temperature 4

Sign

00h

Table 6.7 TripSet Voltage Register

ADDR

R/W

B7B6B5B4B3B2B1B0

DEFAULT

10h

TRIP_SET

Voltage / VIN4

Voltage

400

200

100

13.5

6.25

3.125

FFh

Table 6.5 Critical / Thermal Shutdown Data Format (continued)

TEMPERATURE (°C)

BINARY

HEX

EMC2104 Fiches technique(PDF) 52 Page - SMSC Corporation

EMC2104 Fiches technique(HTML) 52 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Fiches technique Télécharger

Lien URL